arctic-api
D Subbarao# SYSTEM ROLE You are a world-class: * Senior Full Stack Engineer * SaaS Architect * API Gateway Engineer * Security Engineer * Billing System Designer You MUST build a **production-grade API Marketplace (Play Store for APIs)**. This is NOT a demo. This must be a **fully working SaaS product**. --- # 🎯 PRODUCT GOAL Build a platform where: 1. Users can browse APIs 2. If API is FREE → user can use instantly 3. If API is PAID → user must: * Either subscribe via platform (Stripe) * OR add their own API key (BYOK model) 4. Users can test APIs inside the platform (Playground) 5. Platform tracks usage + analytics --- # 🧠 CORE BUSINESS LOGIC (VERY IMPORTANT) ## API TYPES ### 🟢 FREE APIs * No payment required * Direct access via gateway * No API key required (or public key) ### 🔴 PAID APIs Two modes: #### MODE A: BYOK (Bring Your Own Key) * User enters their own API key * Platform stores it securely (encrypted) * Requests are proxied using user's key #### MODE B: PLATFORM BILLING * User pays via Stripe * Platform provides access * Platform tracks usage + charges per request --- # 🏗️ TECH STACK ## FRONTEND * Next.js 14 (App Router) * TypeScript * Tailwind CSS * ShadCN UI * React Query ## BACKEND * NestJS (Node.js) * PostgreSQL * Prisma ORM * Redis (rate limiting, caching) * JWT Authentication ## PAYMENTS * Stripe ## INFRA * Docker * Nginx * Monorepo structure --- # 📦 MONOREPO STRUCTURE /api-store ├── apps/ │ ├── web (Next.js frontend) │ ├── api (NestJS backend) │ ├── gateway (API proxy service) ├── packages/ │ ├── ui │ ├── sdk-generator │ ├── utils ├── infra/ │ ├── docker │ ├── nginx --- # 🗄️ DATABASE SCHEMA (PRISMA) model User { id String @id @default(uuid()) email String @unique password String credits Float @default(0) createdAt DateTime @default(now()) } model API { id String @id @default(uuid()) name String category String baseUrl String isFree Boolean pricePerRequest Float? requiresSubscription Boolean authType String createdAt DateTime @default(now()) } model Subscription { id String @id @default(uuid()) userId String apiId String active Boolean } model UserAPIKey { id String @id @default(uuid()) userId String apiId String encryptedKey String } model UsageLog { id String @id @default(uuid()) userId String apiId String cost Float createdAt DateTime @default(now()) } --- # 🔐 SECURITY * JWT authentication * Encrypt API keys before storing * Rate limiting via Redis * Validate all inputs (Zod) --- # ⚙️ API GATEWAY (CRITICAL) Create a proxy system: Endpoint: POST /gateway/:apiId ### Logic: 1. Fetch API config from DB 2. Check: * If FREE → allow * If PAID: * Check subscription OR * Fetch user API key (BYOK) 3. Inject correct API key into headers 4. Forward request to external API 5. Log usage 6. Return response --- # 🧠 GATEWAY SAMPLE LOGIC * Handle: * Timeouts * Retries * Errors * Rate limits --- # 💳 BILLING SYSTEM (STRIPE) * Subscription plans * Pay-per-request billing * Webhook handling * Credit system --- # 🖥️ FRONTEND FEATURES ## Pages 1. Homepage * Trending APIs * Categories 2. Marketplace * Filters (Free / Paid) * Search 3. API Detail Page * Description * Pricing * Try Now button 4. Playground * JSON input editor * Response viewer * Headers input 5. Dashboard * API Keys * Usage analytics * Billing info --- # 🎨 UI LOGIC Each API card shows: * Name * Category * Badge: FREE or PAID Buttons: * FREE → "Use Now" * PAID → "Subscribe" or "Add API Key" --- # 🧪 PLAYGROUND SYSTEM User can: * Enter JSON input * Add headers * Execute request System calls: POST /gateway/:apiId --- # 🔑 API KEY SYSTEM * User can save API keys * Encrypt keys before DB storage * Decrypt only during request --- # 📊 ANALYTICS * Track: * Requests per API * Cost per user * Usage trends --- # 🌱 SEED DATA (MANDATORY) Insert initial APIs: * OpenAI * HuggingFace * OpenWeather * CoinGecko * News API * REST Countries * NASA API --- # 🐳 DOCKER SETUP * Dockerfile for frontend * Dockerfile for backend * Docker Compose for all services --- # 🔄 CI/CD READY * Environment variables * Production configs --- # ⚠️ RULES (STRICT) DO NOT: * Skip any module * Give pseudo code * Leave incomplete parts DO: * Write full working code * Make system runnable locally * Include setup instructions --- # 🚀 FINAL OUTPUT You MUST generate: 1. Full backend (NestJS modules) 2. Full frontend (Next.js pages) 3. API gateway implementation 4. Prisma schema 5. Docker setup 6. Stripe integration 7. Seed script 8. SDK generator 9. Auth system --- # 🏁 FINAL GOAL This should result in: 👉 A working SaaS product similar to an API marketplace 👉 Free APIs usable instantly 👉 Paid APIs accessible via subscription or BYOK --- # START BUILDING NOW
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System Requirements
System Requirements Document (SRD)
Project Name: Arctic-API
1. Introduction
The Arctic-API project is a production-grade API marketplace designed to function as a "Play Store for APIs." It aims to provide users with a seamless platform to browse, test, and integrate APIs, whether free or paid, into their applications. The system will support both subscription-based billing and a Bring Your Own Key (BYOK) model for paid APIs.
This document outlines the system requirements for Arctic-API, ensuring alignment with the vision provided by D Subbarao from India. The platform will cater to a global audience while incorporating locale-specific considerations such as timezone (IST), currency (INR), and user preferences.
2. System Overview
Arctic-API is a SaaS product that enables users to:
- Browse APIs categorized by type and functionality.
- Access free APIs instantly without requiring authentication.
- Use paid APIs either by subscribing via Stripe or by providing their own API keys (BYOK).
- Test APIs in a built-in playground environment.
- Track API usage and analytics for better insights.
The platform will include a robust backend for API management, a frontend for user interaction, and an API gateway for secure and efficient proxying of requests. Security, scalability, and user experience are the core pillars of the system.
3. Functional Requirements
User Stories
- As a User, I should be able to browse APIs by category and type (Free/Paid).
- As a User, I should be able to search for APIs using keywords.
- As a User, I should be able to view detailed information about an API, including pricing and usage instructions.
- As a User, I should be able to test APIs in a playground environment with JSON input and headers.
- As a User, I should be able to subscribe to paid APIs via Stripe.
- As a User, I should be able to add my own API key for paid APIs (BYOK model).
- As a User, I should be able to track my API usage and analytics in the dashboard.
- As an Admin, I should be able to manage API listings, including adding, updating, and removing APIs.
- As an Admin, I should be able to monitor platform usage and generate reports.
4. User Personas
1. Regular User
- Description: Individuals or developers looking to integrate APIs into their applications.
- Needs: Easy access to APIs, transparent pricing, and usage analytics.
2. Admin
- Description: Platform managers responsible for maintaining API listings and monitoring system performance.
- Needs: Tools to manage APIs, monitor usage, and ensure system security.
5. Visuals Colors and Theme
Color Palette
The Arctic-API platform will adopt a modern and professional theme inspired by the Arctic's serene yet powerful aesthetic.
- Background:
#F0F8FF(Alice Blue) - Surface:
#FFFFFF(Pure White) - Text:
#2E4057(Charcoal Blue) - Accent:
#00A8E8(Bright Arctic Blue) - Muted Tones:
#B0C4DE(Light Steel Blue)
6. Signature Design Concept
Interactive Iceberg Landing Page
The homepage will feature a 3D interactive iceberg floating in an Arctic ocean. Each section of the iceberg will represent a category of APIs (e.g., Weather APIs, Finance APIs, AI APIs).
- Animations: The iceberg will subtly shift and rotate based on mouse movement, creating an immersive experience.
- Transitions: Clicking on a section will "zoom in" to reveal API cards floating like ice blocks.
- Micro-interactions: Hovering over API cards will cause them to glow and display additional details.
- Color Shifts: The background will transition from a bright Arctic blue during the day to a darker, starry theme at night based on the user's local timezone.
This design will make the platform unforgettable and visually captivating while maintaining usability.
7. Non-Functional Requirements
- Performance: The system must handle at least 10,000 concurrent users.
- Scalability: The architecture should support adding new APIs and categories without downtime.
- Security: All API keys must be encrypted before storage, and JWT authentication must be implemented.
- Availability: The system must maintain 99.9% uptime.
- Localization: Support for multiple currencies and timezones, with INR and IST as defaults for Indian users.
8. Tech Stack
Frontend
- React (Web)
- React Native (Mobile App)
Backend
- Python
- FastAPI
Database
- MySQL (with Alembic for migrations)
AI Models
- GPT 5.4 for user-friendly responses
- Claude 4.6 Opas for academic or coding work
- Google Nano Banana for image generation
AI Tools
- Litellm for LLM Routing
- Langchain
Orchestration
- Docker (local)
- Kubernetes (server-side)
9. Assumptions and Constraints
Assumptions
- Users will have basic knowledge of APIs and their usage.
- Stripe will be available for payment processing in all target regions.
- The platform will initially target English-speaking users.
Constraints
- The system must comply with GDPR and other relevant data protection regulations.
- API response times must not exceed 500ms under normal load.
10. Glossary
- API: Application Programming Interface, a set of functions allowing applications to access data or features of other services.
- BYOK: Bring Your Own Key, a model where users provide their own API keys for integration.
- JWT: JSON Web Token, a standard for securely transmitting information between parties.
- Stripe: A payment processing platform used for subscriptions and transactions.
- Redis: An in-memory data structure store used for caching and rate limiting.
This document serves as the blueprint for Arctic-API, ensuring all requirements are clearly defined and aligned with the project's goals. Let me know if you'd like to refine or expand any section further! 😊
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{"model": "gpt-4","messages": [{"role": "user","content": "Explain REST APIs"}],"max_tokens": 256,"temperature": 0.7}
{"id": "chatcmpl-9x2kL...","object": "chat.completion","model": "gpt-4","choices": [{"index": 0,"message": {"role": "assistant","content": "REST APIs use HTTP..."},"finish_reason": "stop"}],"usage": {"prompt_tokens": 12,"completion_tokens": 186,"total_tokens": 198}}
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